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  1. 6.5L Diesel Engine
    Well, I'm stumped! My 1993 6.5 diesel is surging only when the throttle is slightly pressed. I have no air intrusion and have 7-8 psi of fuel pressure at the engine. Recent work: New fuel line pre-lift pump (old had air intrusion) and installed a Reman IP a few months ago to try to resolve a...
  2. 6.5L Diesel Engine
    Hello everyone. I looked over the forum for some time but this is my first time posting. I have 3 issues possibly related or possibly not. Truck currently surges between 1500-1900 RPM. This issue started last week and truck has been parked since. Once at 2k it over powers the issue and is not...
  3. 6.5L Diesel Engine
    So i have an issue with my 6.5. I have already replaced the wastegate actuator, boost solenoid, intake temp sensor, egr (tuna can) and the map sensor on the the intake. The issue I am having i have gotten mixed answers but I wanna hear your opinions. I can be driving down the road just fine and...
  4. Duramax First Generation: 2001-2004 (LB7)
    just got everything back together on my LB7 brand new FPR. fired the truck up and its looping /surging at idle when it is in P,R,N,D,3,2,and in 1st gear and it goes away when i accelerate. at idle rpm cage jumps up and down and truck shakes really bad
1-4 of 4 Results